MySQL Fatal Error

MySQL Error!

MySQL error in file: /home/admin/web/nokia-site.ru/public_html/engine/classes/mysqli.class.php at line 52

Error Number: 1

The Error returned was:
Too many connections

SQL query:

Warning: Unknown: open(/home/admin/tmp/sess_bv9hgldfuf1efm1sojg1gdaqv5, O_RDWR) failed: No space left on device (28) in Unknown on line 0 Warning: Unknown: Failed to write session data (files). Please verify that the current setting of session.save_path is correct (/home/admin/tmp) in Unknown on line 0